Combination sheet slow-down and straightener for feeders.



C. E. OHRSTOPHEL.

OOWIBINA'IION SHEET SLOW DOWN AND S'FRAGHTENER FOR FBEDERS,

AYI'L'IGATION FILED ARB, 1912.

Mmmm@ July 22, 191% Si.

E. GHRISTOPHEL. T SLOW DOWN AND ST APPLICATION NLRB AP RAIGHTENBR FOR PBEDERS. n.3, 1912 Patented July 22, 15913.

5 SHEETSMSHEFT 2.

MWWWWWW l mp/ j. El GHRISTUPHEL. COMBINATION SHEET SLOW DOWN AND STRAIGHTBNER POR FEEDERS.

POJOOYOO July 22, MMS.

5 BHEETSwSHEE'l' 3,

C. E. OHRISTOHEL. COMBINATION SHEET SLOW DOWN AND STRAIGH'IENEH POR PERDERE.

APPLICATION FILED APR. 3, 1912,

pendulum Q'is engaged by a lug which projects laterally` from the block to hold` the pavvl 30 out of engagement with the ratchet 15, thus permitting the forward movement of the slide 11. llpcn a pivot B3 swings a bar 34e tothe lovver end ot which is secured a guide yoke 35, which guides the for-Ward edge of the sheet 26 to engage the pendulum 27. rThe upper arm of the 'our is pivotally connected at 36, which carries a spring 3S, imparting a. normal tmdency to retain the bar 34 in the position shown in Fig.V 5.

By means of this construction it will be apparent that as the pendulum 27 is moved into the position shownfin dotted lines in Fig. 5, the paWl 30 is permitted to engage the ratchet l5, and thus interrupt the forward movement ofthe slide 11 and in consequence that of the sheet 26. As the forward movement 'of the cam arm 7 continues, however, its lower end engages a laterally projecting tappet 39, Which is adjustably mounted upon a slide rod 40 with-.its forward end pivotally connected at l-l Iwith the har Se.

,As a result, the rod* 40 imparts a torvmrd movement to the guide yoke 35 by straightening the knuckle vjoint at 36, thus moving the guide yoke 35'out of the way to permit a resumption' of theforward movement of thev sheet 26, which takes place under the action of the feed tapes 42 and continues until the front gage 43 is encountered. To malte this action possible, the gripper rod 21 must be raised. F or this purpose a cam roller Lid on the cam arm T when in the position shown in Fig. 5, begins to ride upon the curved eX- tremity 45 of a cam bar 46, which swings about a pivot 47 on the guide rail 12. Said cam bar is provided with a rearwardly projecting arm above which the cam roller 24 travels. As soon, however, as this end ot the cam har is raised in the position shoivn in dotted lines in Fig. 5, the rod 21 is raised to release the sheet 26. Upon the return movement of the cam arm 7, the Vrack bar 9 is forced rearwardly and during this movement returns bar 34 and guide yoke 35 to the position 'shown in Fig. 5, the sheet-.havingA passed from underit prior to this. For this purpose, a depending lug 4S intercepts the tappet 39 at a suitable point of its move ment. ln order to lift the paWl 30 into its normal raised position preparatory to the operations upon the next sheet, the rack bar 9 is provided at its forward end 'with a cam block 49 which is provided with a cam surface 50, which is adapted to engage the under curved surface of the paWl 30 as shown 'bestin Fig. 4. A. stop pin .5l/prevents an excessive displacement of said'pawl 80. A stop pin 52 serves to prevent the excessive displacement of the upper end of the har 34.

The operation of my improved device will now be obvious and briefly stated lis as tol- Lessico lovcs: Yllhen the sheet 2G reaches the position shown irl Fig. il, the rock arm begins its forward movement, permitting the slide 1l. to travel in the same direction. is the cani roller li leaves the cum 25,- the gripper pivot clamps the sheet to the pad 20, and causes the movement ot' this edge of the sheet to slow down and correspond with the more1 ment or the slide 11. soon as the ,tor- Ward edge of the sheet hits the pendulum 27 on that side, the pavrl 30 is permitted to drop and interrupt the movement of the ratchet: 15, thus .locking` the rack bar 9 against 'further t'crward movement and temporarily7 holding the sheet 26 in the position shown in Fig. The forward movement of the rock arm T continuing however, the oar 541i with the guide yoke 35 suspended therefrom is thrown into raised position shown in dotted lines in Fig. 5, permitting the forward edge ot the sheet Q6 to drop. At approximately the same time, the roller del rides upon the upwardly deflected end 15 of the rocker har e6, thus releasing this edge or" the sheet and permitting' said sheet to be propelled forward against the front gages 4:3. lt will be seen from this description that each lateral edge of the sheet is positively held in the position shown in Fig. 5 until the opposite' lateral edge of said sheet reaches the same position, the relative action of the several parts being' suitably timed for this purpose. ln consequence When the guide yoles are raised, the sheet has been straightened and ithe short forward movement which follows places its forward edge in suitable position against the front gages to'lie gripped hy the gripper .Fingers of a. printing press or other machine to which the sheets are being fed. By means ot the construction shown and-described, the guide yokes 35 remain in elevated position until. the sheet Q6 has been Withdrawn. lurinej the return movement the roclt arm 7, the lun- 48 engages the tappet 39, returning 'the guide yoke B5 to normal position and eventually raising the gripper rod 21 into first position. The pivots on the lower end ofthe gripper rods 21 permit the relative angular adjustmentotthe sheets suhsequently to the gripping acti ,n oteither gripper. n

lllhat l' claim is;

1. ln a oevice of the character deserihed, means traveling in the direction of feed for vfeeding a sheet. a" sionY down gripper adapt.- e l to travel in thi` saine direction a slower speed vthan said feeding" means, avpendulum normally disposed to intercept said sheet i the forward travel offsaid sheet, and mear under the control said pendulum and in ofvice or the character d 4. 'accenna feeding means, a cam bar for releasing said i gripper approximately at the end of its forward movement, and common means for operating said reciprocating bar and said cam bar'.

13. In a devcecf the character described, tlie combination with" sheet feeding` means, of laterally spaced sheet straightening mechanisms, eacli of said mechanisms comprising a slc-W down sheet engaging device capablel of being recipi'ocated parallel to vtlie direction of feed, means for terminating the for.

the combinatie-n Witli sheet 'feeding means,

of laterally spaced sheet straightening mechanisms; each of said mechanisms comprising a slow down sheet engaging device capable c 0f being reciprocated parallel to the direction of feed, means for terminating the fon Ward'movement cf said sheetI engaging device ivlien a point 0in the forward, edge of said sheet in frontof said device reaches a lpredetermined peint, means for disengaging said slow dcvvifdevice 'from the paper, ccmmoii means for reciprocating said slow down device and operating said d isengaging means and means adjacent t-lie reaimost p0- sition of said slow` down device fer holding it in disengaged position.,

, 'CARL E. CHRlSTOPHEL.

`Witnesses2 D; VDN Soosrniv, Jr., ELIZABETH Feminin.

(gli 

